PERAN BALAI PENGELOLAAN DAERAH ALIRAN SUNGAI DAN HUTAN LINDUNG SERAYU OPAK PROGO DALAM PENGELOLAAN DAS OPAK SEBAGAI UPAYA PENCEGAHAN KERUSAKAN LINGKUNGAN DI DAERAH ISTIMEWA YOGYAKARTA

Watershed is an area of land which is an integral part of the river and its tributaries, which serves to accommodate, store and drain water from rainfall to the lake or to the sea naturally, which is the dividing boundary on land topographic and sea boundary up the water area is still affected by land activities. The problems of this research is how watershed management center conduct efforts to prevent environmental damage Studies used empirical legal research is focused on the role of watershed management center to prevent environmental damage in Opak watershed. From the results of a critical land inventory conducted by the Serayu Opak Progo Watershed Management Center. In 2004 it was found that the most of the watershed in the Serayu Opak Progo were in critical conditio